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Interesting these iron concretions, approximate diameter: 19mm x 19mm x 10mm*actual items shown..
£6.00
Mineral ConcretionInteresting these concretions, naturally formed from various minerals into a natur..
£6.90
Dendritic Concretion Cabochon, unique concretion material with dendrite patterns, shaped to be a cab..
£6.50
Limonite Mineral ConcretionInteresting these concretions, this is a naturally formed limonite minera..
£11.90